CN219691973U - Connecting rod of internal combustion engine, internal combustion engine and vehicle - Google Patents

Abstract

The utility model discloses a connecting rod of an internal combustion engine, the internal combustion engine and a vehicle, wherein the connecting rod of the internal combustion engine comprises: the connecting rod main body is provided with a first connecting end and a second connecting end which are opposite along the first direction of the connecting rod main body, the second connecting end is suitable for being connected with a piston of an internal combustion engine, the first connecting end is provided with a first mounting hole, the first mounting hole is suitable for being used for mounting a crankshaft of the internal combustion engine, the connecting rod main body is provided with a first side and a second side which are opposite along the second direction of the connecting rod main body, the first side and/or the second side is provided with an oil guide groove adjacent to the first mounting hole, and the oil guide groove is suitable for injecting lubricating oil to the connection part of the second connecting end and the piston and/or a cylinder hole of a cylinder of the internal combustion engine. Therefore, according to the connecting rod of the internal combustion engine, the effect of injecting lubricating oil to the designated position is realized, the lubricating effect of parts of the internal combustion engine is improved, the risk of abrasion of the parts of the internal combustion engine is reduced, and the service life of the internal combustion engine is prolonged.

Description

Connecting rod of internal combustion engine, internal combustion engine and vehicle

Technical Field

The utility model relates to the field of internal combustion engines, in particular to a connecting rod of an internal combustion engine, the internal combustion engine and a vehicle.

Background

Connecting rods are important parts in internal combustion engines, connecting rods connect pistons and crankshafts, which function to transform the reciprocating motion of the pistons into rotational motion of the crankshafts, and to transmit forces acting on the pistons to the crankshafts to output power.

In the related art, lubricating oil can be used for lubricating a connecting rod and a crankshaft, and is discharged from a gap between the connecting rod and the crankshaft after lubrication, so that the oil leakage effect is realized, but in the process that the lubricating oil is discharged from the gap between the connecting rod and the crankshaft through the existing connecting rod, the lubricating oil flows back to an oil pan of the internal combustion engine, so that the lubricating oil cannot flow to other positions of the internal combustion engine, the lubricating effect of part parts of the internal combustion engine is poor, the risk of abrasion of part parts is increased, and the service life of the internal combustion engine is further shortened.

Disclosure of Invention

The present utility model aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the utility model provides the connecting rod of the internal combustion engine, so that lubricating oil is sprayed to a designated position, the oil drainage rate is increased, and the service life of the internal combustion engine is prolonged.

The utility model also provides an internal combustion engine with the connecting rod.

The utility model also provides a vehicle with the internal combustion engine.

The connecting rod of the internal combustion engine according to the present utility model includes:

the connecting rod main body is provided with a first connecting end and a second connecting end which are opposite along a first direction of the connecting rod main body, the second connecting end is suitable for being connected with a piston of an internal combustion engine, the first connecting end is provided with a first mounting hole, the first mounting hole is suitable for being used for mounting a crankshaft of the internal combustion engine, the connecting rod main body is provided with a first side and a second side which are opposite along a second direction of the connecting rod main body, the first side and/or the second side is provided with an oil guide groove adjacent to the first mounting hole, and the oil guide groove is suitable for injecting lubricating oil to a connecting part of the second connecting end and the piston and/or a cylinder hole of a cylinder of the internal combustion engine, wherein the first direction and the second direction are perpendicular.

According to the connecting rod of the internal combustion engine, the effect of injecting lubricating oil to the designated position is achieved, the oil drainage rate is increased, the lubricating effect of parts of the internal combustion engine is improved, the risk of abrasion of the parts of the internal combustion engine is reduced, and the service life of the internal combustion engine is prolonged.

In some examples of the utility model, the oil guide groove includes: and the first oil guide groove is suitable for spraying lubricating oil to the joint of the second connecting end and the piston.

In some examples of the present utility model, the second connection end is formed with a second mounting hole, a central axis of the second mounting hole and a central axis of the first mounting hole form a first axis, and in the second direction, an orthographic projection of the first oil guiding groove and an orthographic projection of the first axis have a superposition area.

In some examples of the utility model, the first oil guide groove has a first midline extending in a radial direction of the first mounting hole and intersecting a central axis of the first mounting hole in a circumferential direction of the first mounting hole.

In some examples of the utility model, the oil guide groove further comprises: and a second oil guiding groove formed on at least one side of the first oil guiding groove along the circumferential direction of the first mounting hole, the second oil guiding groove being adapted to spray lubricating oil to the cylinder hole.

In some examples of the utility model, the second oil guide groove has a second centerline extending in a radial direction of the first mounting hole and intersecting a central axis of the first mounting hole in a circumferential direction of the first mounting hole.

In some examples of the utility model, the first oil guiding groove has second oil guiding grooves on both sides thereof in a circumferential direction of the first mounting hole, and the second oil guiding grooves on both sides thereof are symmetrical with respect to the first oil guiding groove.

In some examples of the utility model, the first oil guide groove and the second oil guide groove are spaced apart along a circumferential direction of the first mounting hole.

According to the internal combustion engine of the present utility model, the internal combustion engine includes the connecting rod of the internal combustion engine described above.

According to the vehicle of the present utility model, the vehicle includes the above-described internal combustion engine.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic view of a connecting rod according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view at A-A in FIG. 1;

FIG. 3 is a schematic illustration of the mating of a connecting rod, piston, crankshaft and cylinder according to an embodiment of the present utility model;

FIG. 4 is a schematic illustration of the mating of a connecting rod, piston and crankshaft in accordance with an embodiment of the present utility model.

Reference numerals:

a connecting rod 100; a link main body 101;

a first connection terminal 1; a first mounting hole 10; a mounting surface 11a; an oil drain surface 11b;

a second connection terminal 2; a second mounting hole 20;

a first oil guide groove 3a; a second oil guiding groove 3b;

a piston 200; a piston pin 21;

a crankshaft 300; an oil passage 30; an oil drain hole 30a;

a cylinder 400; a cylinder hole 40;

bearing bush 500;

a first midline 61; a second midline 62.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the following, a connecting rod 100 of an internal combustion engine according to an embodiment of the present utility model will be described in detail with reference to fig. 1 to 4, and the connecting rod 100 may be applied to an internal combustion engine such that the connecting rod 100 is used to connect a piston 200 and a crankshaft 300 of the internal combustion engine, thereby achieving an effect of driving the crankshaft 300 with the piston 200, and thus achieving an effect that the connecting rod 100 transmits a force acting on the piston 200 to the crankshaft 300 to output power. However, the present utility model is not limited thereto, and the connecting rod 100 may be applied to other devices where the connecting rod 100 is required to be provided, and in some embodiments of the present utility model, the connecting rod 100 is described as being applied to an internal combustion engine.

As shown in fig. 1, a link 100 according to an embodiment of the present utility model includes a link body 101, and the link body 101 has opposite first and second connection ends 1 and 2 along a first direction of the link body 101, the first direction being an X direction shown in fig. 1, the X direction being a length direction of the link 100. As shown in fig. 3, the second connecting end 2 is suitable for being connected with a piston 200 of an internal combustion engine, and the second connecting end 2 is movably connected with the piston 200, so as to achieve the effect of movably connecting the connecting rod 100 with the piston 200. As shown in fig. 1, 3 and 4, the first connecting end 1 is formed with a first mounting hole 10, the first mounting hole 10 is adapted to mount a crankshaft 300 of an internal combustion engine, and the first connecting end 1 is movably connected with the crankshaft 300, thereby achieving the effect that the connecting rod 100 is connected between the piston 200 and the crankshaft 300. Thereby, the effect of the driving connection of the piston 200 with the crankshaft 300 is achieved such that the connecting rod 100 converts the reciprocating motion of the piston 200 into the rotational motion of the crankshaft 300 and transmits the force acting on the piston 200 to the crankshaft 300 to output power. The piston 200 may have a piston pin 21, and the second connection end 2 is adapted to be movably connected with the piston pin 21, so as to achieve the effect of movably connecting the connecting rod 100 with the piston 200.

As shown in fig. 2, the link body 101 has opposite first and second sides along a second direction of the link body 101, which is a Z-direction shown in fig. 2, which is a thickness direction of the link 100. The first side and/or the second side has an oil guiding groove adjacent to the first mounting hole 10, and it is also understood that both the first side and the second side of the connecting rod body 101 have an oil guiding groove, or the first side has an oil guiding groove or the second side has an oil guiding groove.

The oil guide groove is adapted to spray the lubricating oil to the connection of the second connection end 2 with the piston 200 and/or to the cylinder bore 40 of the cylinder 400 of the internal combustion engine, and it is also understood that the lubricating oil is sprayed to the connection of the second connection end 2 with the piston 200 and the cylinder bore 40 of the cylinder 400 through the oil guide groove, or the lubricating oil is sprayed to the connection of the second connection end 2 with the piston 200 through the oil guide groove or the lubricating oil is sprayed to one of the cylinder bores 40 of the cylinder 400 through the oil guide groove. From this, lubricating oil can spray to the junction of second link 2 and piston 200 and jar hole 40 through leading the oil groove to make lubricating oil lubricate the junction of second link 2 and piston 200, realize reducing the effect that the wearing and tearing risk appears in the junction of second link 2 and piston pin 21, and make the lubricating oil infiltrate the inner peripheral wall of jar hole 40, realize reducing the effect that the wearing and tearing risk appears in the inner peripheral wall of piston 200 and jar hole 40. Wherein the first direction and the second direction are perpendicular.

As shown in fig. 3 and 4, in some embodiments of the present utility model, a piston 200 is provided in a cylinder hole 40 of a cylinder 400, and a connecting rod 100 is connected between the piston 200 and a crankshaft 300, the crankshaft 300 has an oil passage 30 therein for transporting lubricating oil, the lubricating oil stored in an oil pan may flow into the oil passage 30, and the oil passage 30 has an oil drain hole 30a, the lubricating oil is adapted to flow along the oil passage 30, and the lubricating oil is drained out of the oil passage 30 through the oil drain hole 30a, to achieve an effect that the lubricating oil flows into a gap between the first mounting hole 10 and the crankshaft 300.

When the connecting rod 100 is movably connected with the crankshaft 300, the orthographic projection of the first mounting hole 10 may coincide with the orthographic projection of the oil discharge hole 30a in the first direction, so that the lubricating oil is adapted to flow from the oil passage 30 to the inner peripheral wall of the first mounting hole 10. During rotation of the crankshaft 300, lubricating oil between the first mounting hole 10 and the crankshaft 300 splashes so that the lubricating oil is sprayed to the joint of the second connecting end 2 and the piston 200 and the cylinder hole 40 through the oil guide groove, an effect that lubricating oil lubricates the joint of the second connecting end 2 and the piston pin 21 is achieved, a risk that abrasion occurs at the joint of the second connecting end 2 and the piston pin 21 is reduced, and the lubricating oil is sprayed to the inner circumferential wall of the cylinder hole 40 through the oil guide groove, an effect that lubricating oil infiltrates the inner circumferential wall of the cylinder hole 40 is achieved, and a risk that abrasion occurs between the piston 200 and the inner circumferential wall of the cylinder hole 40 is reduced when the piston 200 moves along the depth direction of the cylinder hole 40.

Thus, according to the connecting rod 100 of the internal combustion engine of the present utility model, the effect of injecting the lubricating oil to the specified position is achieved, the lubrication effect of the parts of the internal combustion engine is improved, the risk of abrasion of the parts of the internal combustion engine is reduced, and the service life of the internal combustion engine is advantageously prolonged.

Further, according to the connecting rod 100 of the embodiment of the present utility model, the effect of injecting the lubricating oil to the specified position can be achieved, and thus the lubrication mechanism (for example, the lubricating oil nozzle) provided for lubricating the parts can be reduced, so that the structure of the internal combustion engine is simplified, the structure of the internal combustion engine is more compact, the manufacturing cost of the internal combustion engine is reduced, the volume of the internal combustion engine is reduced, and the effect of the lightweight design of the internal combustion engine is achieved.

In some embodiments of the present utility model, as shown in fig. 3 and 4, a bearing bush 500 is provided between the first mounting hole 10 and the crankshaft 300 in the radial direction of the first mounting hole 10, and the bearing bush 500 is adapted to be fixed to the inner circumferential wall of the first mounting hole 10, as shown in fig. 4, an oil drain hole 30a is provided corresponding to the bearing bush 500 in the radial direction of the first mounting hole 10, so that after the lubricating oil is drained from the oil drain hole 30a, the lubricating oil flows into a gap between the bearing bush 500 and the crankshaft 300, so that the lubricating oil forms an oil film between the bearing bush 500 and the crankshaft 300, the effect of lubricating the bearing bush 500 and the crankshaft 300 is achieved, and the risk of abnormal wear of the bearing bush 500 and the crankshaft 300 is reduced.

After lubricating the bearing bush 500 and the crankshaft 300, lubricating oil is discharged through a gap between the first side of the connecting rod main body 101 and the crankshaft 300, and lubricating oil can be discharged through a gap between the second side of the connecting rod main body 101 and the crankshaft 300, so that an effect of lubricating oil films formed between the two sides of the connecting rod main body 101 and the crankshaft 300 respectively is achieved in the lubricating oil discharging process, the risk of dry friction between the first side and the second side of the connecting rod main body 101 and the crankshaft 300 respectively is reduced, and meanwhile, lubricating oil flows back to an oil sump of an internal combustion engine again, and an effect of lubricating oil circulation is achieved.

In some embodiments of the present utility model, as shown in fig. 2, the inner peripheral wall of the first mounting hole 10 may have a mounting surface 11a and a drain surface 11b, the mounting surface 11a and the drain surface 11b being disposed adjacently, the drain surface 11b being configured in a chamfer structure so that lubricating oil for lubricating the bearing bush 500 and the crankshaft 300 may be discharged from the drain surface 11 b. As shown in fig. 2, in the second direction, two oil drain surfaces 11b are respectively adjacent to both sides of the installation surface 11 a. The bearing bush 500 is adapted to be fixed to the mounting surface 11a to achieve the effect that the bearing bush 500 is fixed to the inner peripheral wall of the first mounting hole 10, and when the connecting rod 100 is connected to the crankshaft 300, the oil drain surface 11b is spaced apart from the crankshaft 300 to form an oil drain gap so that lubricating oil for lubricating the bearing bush 500 and the crankshaft 300 can be discharged through the oil drain gap so that the lubricating oil flows back to the oil pan of the internal combustion engine again to achieve the effect of lubricating oil circulation.

In the prior art, the oil drainage gap between the oil drainage surface and the crankshaft is smaller, lubricating oil is easy to block the gap between the oil drainage surface and the crankshaft, so that the lubricating oil cannot be timely discharged out of the gap between the bearing bush and the crankshaft, the oil drainage efficiency of the lubricating oil is lower, the temperature of the lubricating oil is increased, the viscosity of the lubricating oil is lowered, a stable oil film cannot be formed between the bearing bush and the crankshaft, and the risks of poor bearing bush lubrication and abnormal bearing bush abrasion are caused.

As shown in fig. 2, in some embodiments of the present utility model, an oil guide groove may be provided at the oil drain surface 11b, and the oil guide groove is configured to be recessed toward the inside of the connecting rod main body 101, so that the lubricating oil between the bearing bush 500 and the crankshaft 300 may be drained through the oil guide groove, thereby increasing the oil drain efficiency of the lubricating oil, ensuring that the lubricating oil between the bearing bush 500 and the crankshaft 300 can be drained in time, reducing the circulating pressure and resistance of the lubricating oil, so that the lubricating oil flows smoothly, thereby driving a part of the heat of the engine to work by the flowing lubricating oil, and preventing the risk of viscosity reduction of the lubricating oil due to the temperature rise of the lubricating oil, so as to form a stable oil film between the bearing bush 500 and the crankshaft 300, thereby reducing the risk of poor lubrication of the bearing bush 500 and abnormal wear of the bearing bush 500.

In addition, in the prior art, the effect of increasing the oil drainage efficiency of lubricating oil is achieved by increasing the gap between the second connecting end and the crankshaft, i.e. the gap between the oil drainage surface and the crankshaft, along the axial direction of the crankshaft, but this technical solution results in a larger axial dimension of the crankshaft and in a larger mass of the crankshaft. Compared with the prior art, according to the connecting rod 100 of the embodiment of the utility model, the effect of increasing the oil drainage efficiency of the lubricating oil can be achieved without increasing the gap between the second connecting end 2 and the crankshaft 300, thereby being beneficial to reducing the axial dimension of the crankshaft 300 and reducing the axial mass. Thus, the internal combustion engine using the connecting rod 100 according to the embodiment of the present utility model is more compact in structure and further achieves the effect of the lightweight design of the internal combustion engine, particularly, the internal combustion engine having the plurality of cylinders 400.

In some embodiments of the present utility model, as shown in fig. 1, the oil guide groove may include: the first oil guiding groove 3a, the first oil guiding groove 3a is suitable for injecting lubricating oil to the connection position of the second connecting end 2 and the piston 200, so that the effect of lubricating the connection position of the second connecting end 2 and the piston 200 by the lubricating oil is realized, and the risk of abrasion of the connection position of the second connecting end 2 and the piston 200 is reduced.

In some embodiments of the present utility model, as shown in fig. 1, the first oil guiding groove 3a may be disposed to extend in the first direction, wherein one end of the first oil guiding groove 3a extends from the side near the second connection end 2 toward the hole center side of the first mounting hole 10 to achieve the effect that the first oil guiding groove 3a is disposed to extend in the first direction. In the process of lubricating oil draining, lubricating oil flows into the first oil guiding groove 3a from one end of the first oil guiding groove 3a close to the hole center, so that lubricating oil splashes in the process of moving the piston 200 and the crankshaft 300, and the lubricating oil in the first oil guiding groove 3a is discharged from one end of the first oil guiding groove 3a close to the second connecting end 2, so that the lubricating oil is sprayed to the joint of the second connecting end 2 and the piston 200, and the effect of lubricating the joint of the second connecting end 2 and the piston 200 is realized. Specifically, the lubricating oil is sprayed to the connection of the second connection end 2 and the piston pin 21, so that the effect of lubricating the connection of the second connection end 2 and the piston pin 21 is achieved, and the risk of abrasion at the connection of the second connection end 2 and the piston pin 21 is reduced.

In some embodiments of the present utility model, as shown in fig. 1, the second connection end 2 may be formed with a second mounting hole 20, the central axis of the second mounting hole 20 and the central axis of the first mounting hole 10 are connected to form a first axis, and in the second direction, the orthographic projection of the first oil guiding groove 3a and the orthographic projection of the first axis have overlapping areas, so as to achieve the effect that the lubricating oil is more accurately sprayed to the connection of the second connection end 2 and the piston 200.

As shown in conjunction with fig. 1 and 2, in the second direction, the first mounting hole 10 and the second mounting hole 20 are each configured as a through hole penetrating the link body 101, and in the first direction, the central axis of the first mounting hole 10 and the central axis of the second mounting hole 20 are parallel to each other and are each perpendicular to the first direction. And because the orthographic projection of the first oil guiding groove 3a and the orthographic projection of the first axis have a superposition area along the second direction, so that the effect that the first oil guiding groove 3a extends along the first axis in the first direction is realized, so that lubricating oil is sprayed to the joint of the second connecting end 2 and the piston 200, the effect that lubricating oil is more accurately sprayed to the joint of the second connecting end 2 and the piston 200 is realized, and the risk of abrasion at the joint of the second connecting end 2 and the piston pin 21 is further reduced.

In some embodiments of the present utility model, the piston pin 21 is adapted to penetrate the second mounting hole 20 to achieve the effect of connecting the piston 200 with the second connection end 2. When the lubricating oil is injected to the connection between the second connection end 2 and the piston 200, the lubricating oil forms an oil film between the second mounting hole 20 and the piston pin 21 to achieve the effect of lubricating the connection between the second connection end 2 and the piston 200.

In some embodiments of the present utility model, as shown in fig. 1, the first oil guiding groove 3a has a first center line 61 along the circumferential direction of the first mounting hole 10, the first center line 61 being a center line of the first oil guiding groove 3a in the circumferential direction of the first mounting hole 10, the first center line 61 extending in the radial direction of the first mounting hole 10 and intersecting with the central axis of the first mounting hole 10, which is advantageous for improving the oil drainage efficiency of the lubricating oil.

It should be noted that, in some embodiments of the present utility model, the first center line 61 extends along the radial direction of the first mounting hole 10 and intersects the central axis of the first mounting hole 10, but the present utility model is not limited thereto, and the first center line 61 may not intersect the central axis of the first mounting hole 10, so as to facilitate reducing the processing difficulty of the connecting rod 100 and facilitate the processing and production of the connecting rod 100.

In some embodiments of the present utility model, as shown in fig. 1, the oil guide groove may further include: the second oil guiding groove 3b is formed on at least one side of the first oil guiding groove 3a along the circumferential direction of the first installation hole 10, and it is also understood that the second oil guiding groove 3b is formed on only one side of the first oil guiding groove 3a or the second oil guiding groove 3b is formed on both sides of the first oil guiding groove 3a in the circumferential direction of the first installation hole 10, and in some embodiments of the present utility model, the second oil guiding groove 3b is adapted to spray the lubricating oil to the cylinder hole 40 so that the lubricating oil infiltrates the inner circumferential wall of the cylinder hole 40 to lubricate the piston 200 and the cylinder hole 40 when the piston 200 moves in the cylinder hole 40, reducing the risk of abrasion of the piston 200 and the inner circumferential wall of the cylinder hole 40, as shown in fig. 1.

In some embodiments of the present utility model, as shown in fig. 1, the second oil guiding groove 3b has a second centerline 62 along the circumferential direction of the first mounting hole 10, the second centerline 62 being a centerline of the second oil guiding groove 3b in the circumferential direction of the first mounting hole 10, the second centerline 62 extending in the radial direction of the first mounting hole 10 and intersecting the central axis of the first mounting hole 10, which is advantageous for improving the oil drainage efficiency of the lubricating oil.

It should be noted that, in some embodiments of the present utility model, the second center line 62 extends along the radial direction of the first mounting hole 10 and intersects the central axis of the first mounting hole 10, but the present utility model is not limited thereto, and the second center line 62 may not intersect the central axis of the first mounting hole 10, so as to facilitate reducing the processing difficulty of the connecting rod 100 and facilitating the processing and production of the connecting rod 100.

As shown in fig. 1, in some embodiments of the present utility model, the first center line 61 extends along the radial direction of the first mounting hole 10 and intersects the central axis of the first mounting hole 10, and the second center line 62 extends along the radial direction of the first mounting hole 10 and intersects the central axis of the first mounting hole 10, and the first center line 61 and the second center line 62 intersect at the central axis of the first mounting hole 10, so as to further improve the oil drainage efficiency of the lubricating oil.

In some embodiments of the present utility model, as shown in fig. 1, the first oil guiding groove 3a and the second oil guiding groove 3b are spaced apart along the circumferential direction of the first installation hole 10, it is also understood that the first oil guiding groove 3a and the second oil guiding groove 3b are not communicated, thereby ensuring that the lubricating oil flowing through the first oil guiding groove 3a is sprayed to the connection of the second connection end 2 and the piston 200, ensuring that the lubricating oil flowing through the second oil guiding groove 3b is sprayed to the cylinder hole 40, achieving the effect of lubricating the connection of the second connection end 2 and the piston 200 by the lubricating oil, and achieving the effect of lubricating the piston 200 and the cylinder hole 40.

In some embodiments of the present utility model, as shown in fig. 1, the second center line 62 forms an angle α with the first center line 61 in the circumferential direction of the first mounting hole 10, and the value of α may be selected from values of 10 °, 15 °, 20 °, 25 °, 30 °, 35 °, 40 °, 45 °, or 50 °. By selecting the value of α to achieve the effect of changing the injection position of the lubricating oil through the second oil guide groove 3b, the effect of injecting the lubricating oil to different positions can be achieved.

In some embodiments of the present utility model, α=30°, so that the lubricating oil can be more uniformly sprayed to the inner peripheral wall of the cylinder hole 40 through the second oil guiding groove 3b, and the lubricating oil uniformly infiltrates the inner peripheral wall of the cylinder hole 40, thereby further reducing the risk of abrasion between the piston 200 and the inner peripheral wall of the cylinder hole 40.

In other embodiments of the present utility model, when α=45° is selected, as shown in fig. 4, in the second direction, the lubricating oil uniformly infiltrates both sides of the second connecting end 2 after passing through the second oil guiding groove 3b, so as to achieve the effect of lubricating the first side of the connecting rod main body 101 with the crankshaft 300 and the effect of lubricating the second side of the connecting rod main body 101 with the crankshaft 300, which is beneficial to reducing the risk of poor gap lubrication between the first connecting end 1 and the crankshaft 300, avoiding the generation of large heat between the first connecting end 1 and the crankshaft 300, and avoiding the risk of dry friction wear and strain between the first connecting end 1 and the crankshaft 300.

It should be noted that, in some embodiments of the present utility model, the connecting rod 100 is illustrated as having two second oil guiding grooves 3b, and the angle α formed between the second center line 62 and the first center line 61 of the two second oil guiding grooves 3b may be different. For example, the angle α formed between the second center line 62 and the first center line 61 of the two second oil guiding grooves 3b may be selected to be α=45°, or alternatively, the angle α=45° formed between the second center line 62 and the first center line 61 of one of the two second oil guiding grooves 3b, and the angle α=35° formed between the second center line 62 and the first center line 61 of the other second oil guiding groove 3 b.

In some embodiments of the present utility model, as shown in fig. 1, the second oil guiding grooves 3b are formed at both sides of the first oil guiding groove 3a along the circumferential direction of the first installation hole 10, and the second oil guiding grooves 3b at both sides of the first oil guiding groove 3a are symmetrical with respect to the first oil guiding groove 3a, i.e., the second oil guiding grooves 3a at both sides of the first oil guiding groove 3a are symmetrically disposed with respect to the first center line 61, so as to achieve the effect that two adjacent second oil guiding grooves 3b are symmetrical with respect to the first oil guiding groove 3a, and by disposing two adjacent second oil guiding grooves 3b symmetrically with respect to the first oil guiding groove 3a, the lubricating oil is sprayed to the cylinder hole 40 through the two second oil guiding grooves 3b, so that the lubricating oil uniformly infiltrates the inner peripheral wall of the cylinder hole 40, thereby facilitating the improvement of the lubricating effect between the piston 200 and the cylinder hole 40, and further reducing the risk of wear of the piston 200 and the inner peripheral wall of the cylinder hole 40.

In some embodiments of the present utility model, as shown in fig. 2, the depth of the first oil guiding groove 3a is t1, the depth of the second oil guiding groove 3b is t2, the depth of the oil draining surface 11b is H, t1 is less than or equal to H, and t2 is less than or equal to H, that is, the maximum value of the depth of the selected first oil guiding groove 3a and the depth of the second oil guiding groove 3b cannot be greater than the depth of the oil draining surface 11b, so that the structural strength of the first connecting end 1 is ensured, and the risk of deformation of the first connecting end 1 is reduced. And be favorable to avoiding first oil groove 3a and second oil groove 3b to lead to the installation face 11a uneven to when the axle bush 500 is installed in installation face 11a, avoid causing the unsettled phenomenon of axle bush 500 in first direction, so that the axle bush 500 can be reliably supported to installation face 11a, reduce axle bush 500 deformation, cracked risk, ensure the stability in use of axle bush 500, extension axle bush 500's life.

In some embodiments of the present utility model, h=6mm, t1=6mm, t2=6mm, and the requirement of ensuring that the first oil guiding groove 3a and the second oil guiding groove 3b do not affect the structural strength of the first connection end 1 is such that it is advantageous to maximize the oil drainage efficiency of the first oil guiding groove 3a and the second oil guiding groove 3 b. It should be noted that the above selected values are used for illustration, but the present utility model is not limited thereto, the values selected by H, t and t2 may be selected according to the specific size of the connecting rod 100, t1 is less than or equal to H, t2 is less than or equal to H, and the effect of changing the oil drainage efficiency of the first oil guiding groove 3a and the second oil guiding groove 3b may be achieved by adjusting the values selected by t1 and t 2.

In some embodiments of the present utility model, as shown in fig. 2, the width of the first oil guiding groove 3a is a1, the width of the second oil guiding groove 3b is a2,2mm is less than or equal to a1 and less than or equal to 10mm,2mm is less than or equal to a2 and less than or equal to 10mm, and in some embodiments of the present utility model, a1=10 mm and a2=10 mm are taken as examples, so that the maximization of the oil drainage efficiency of the first oil guiding groove 3a and the second oil guiding groove 3b is facilitated under the requirement that the structural strength of the first connecting end 1 is not affected by the first oil guiding groove 3a and the second oil guiding groove 3 b. It should be noted that the above selected values are used for illustration, but the present utility model is not limited thereto, the values selected by a1 and a2 may be selected according to the specific size of the connecting rod 100, and the effect of changing the oil drainage efficiency of the first oil guiding groove 3a and the second oil guiding groove 3b may be achieved by adjusting the values of a1 and a2 selected.

In some embodiments of the present utility model, the connecting rod 100 according to the embodiment of the present utility model may be manufactured using a forging or casting process to form the first oil guide groove 3a and the second oil guide groove 3b during the manufacturing process of the connecting rod 100, and the connecting rod 100 according to the embodiment of the present utility model has the advantages of simple structure, low cost, long service life, safety and reliability.

In some embodiments of the present utility model, processing may be performed on an existing connecting rod so that the existing connecting rod is formed with the first oil guide groove 3a and the second oil guide groove 3b, thereby realizing that the existing connecting rod is processed to form the connecting rod 100 of the embodiment of the present utility model, further reducing the cost of producing the connecting rod 100, and having short manufacturing and processing time.

According to the internal combustion engine provided by the embodiment of the utility model, the internal combustion engine comprises the connecting rod 100 of the embodiment, the effect of injecting lubricating oil to a designated position is realized by adopting the internal combustion engine provided by the embodiment of the utility model, the lubricating effect of parts of the internal combustion engine is improved, the risk of abrasion of the parts of the internal combustion engine is reduced, the service life of the internal combustion engine is prolonged, the oil drainage efficiency of the lubricating oil is improved, the circulating pressure and the resistance of the lubricating oil in the internal combustion engine are reduced, the lubricating oil flows smoothly, the part of heat of the internal combustion engine is driven by the flowing lubricating oil, the risk of viscosity reduction of the lubricating oil caused by temperature increase of the lubricating oil is prevented, a stable oil film is formed between the bearing bush 500 and the crankshaft 300, and the risks of poor lubrication of the bearing bush 500 and abnormal abrasion of the bearing bush 500 are reduced.

In addition, according to the connecting rod 100 of the embodiment of the present utility model, the effect of increasing the oil drainage efficiency of the lubricating oil can be achieved without increasing the gap between the second connecting end 2 and the crankshaft 300, thereby contributing to a reduction in the axial dimension of the crankshaft 300 and a reduction in the quality in the axial direction. Thus, the internal combustion engine using the connecting rod 100 according to the embodiment of the present utility model is more compact in structure and further achieves the effect of the lightweight design of the internal combustion engine, particularly, the internal combustion engine having the plurality of cylinders 400.

According to the vehicle of the embodiment of the utility model, the vehicle includes the internal combustion engine of the above embodiment.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A connecting rod (100) of an internal combustion engine, characterized by comprising:

-a connecting rod body (101), -in a first direction of the connecting rod body (101), -the connecting rod body (101) has a first connecting end (1) and a second connecting end (2) opposite, the second connecting end (2) being adapted to be connected with a piston (200) of the internal combustion engine, -the first connecting end (1) being formed with a first mounting hole (10), -the first mounting hole (10) being adapted to mount a crankshaft (300) of the internal combustion engine, -in a second direction of the connecting rod body (101), -the connecting rod body (101) has a first side and a second side opposite, the first side and/or the second side having an oil guiding groove adjoining the first mounting hole (10), the oil guiding groove being adapted to spray lubricating oil to a junction of the second connecting end (2) with the piston (200) and/or to a cylinder bore (40) of a cylinder (400) of the internal combustion engine, wherein the first direction and the second direction are perpendicular.

2. The connecting rod (100) of an internal combustion engine according to claim 1, wherein the oil guide groove includes: -a first oil guiding groove (3 a), said first oil guiding groove (3 a) being adapted to spray lubricating oil to the connection of said second connection end (2) with said piston (200).

3. The connecting rod (100) of an internal combustion engine according to claim 2, wherein the second connecting end (2) is formed with a second mounting hole (20), a central axis of the second mounting hole (20) and a central axis of the first mounting hole (10) form a first axis, and in the second direction, an orthographic projection of the first oil guiding groove (3 a) and an orthographic projection of the first axis have overlapping areas.

4. The connecting rod (100) of an internal combustion engine according to claim 2, wherein the first oil guiding groove (3 a) has a first center line (61) in a circumferential direction of the first mounting hole (10), the first center line (61) extending in a radial direction of the first mounting hole (10) and intersecting a center axis of the first mounting hole (10).

5. The connecting rod (100) of an internal combustion engine according to any one of claims 2-4, wherein the oil guide groove further comprises: -a second oil guiding groove (3 b) formed in at least one side of the first oil guiding groove (3 a) along the circumferential direction of the first mounting hole (10), the second oil guiding groove (3 b) being adapted to spray lubricating oil to the cylinder hole (40).

6. The connecting rod (100) of an internal combustion engine according to claim 5, wherein the second oil guiding groove (3 b) has a second center line (62) along a circumferential direction of the first mounting hole (10), the second center line (62) extending in a radial direction of the first mounting hole (10) and intersecting a center axis of the first mounting hole (10).

7. The connecting rod (100) of an internal combustion engine according to claim 5, wherein the second oil guiding grooves (3 b) are provided on both sides of the first oil guiding groove (3 a) in the circumferential direction of the first mounting hole (10), and the second oil guiding grooves (3 b) on both sides of the first oil guiding groove (3 a) are symmetrical with respect to the first oil guiding groove (3 a).

8. The connecting rod (100) of an internal combustion engine according to claim 5, wherein the first oil guiding groove (3 a) and the second oil guiding groove (3 b) are spaced apart in a circumferential direction of the first mounting hole (10).

9. An internal combustion engine, characterized by comprising a connecting rod (100) of an internal combustion engine according to any one of claims 1-8.

10. A vehicle comprising the internal combustion engine according to claim 9.